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Weather data for Mission Viejo is updated regularly with the latest available observations and forecasts.

Now · 12:38 PM

Mission Viejo Weather & Hourly Forecast

United States · California · 92691

98°F

Sunny

Feels like: 102°F

💧 Humidity 40% 🌡 Pressure 29.91 inHg 💨 Wind 5 mph 👁 Visibility 21.0 mi ☁ Clouds 0% ☀️ UV index 8.2 · Very high 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Mission Viejo

Today

1:00 PM

Sunny

98° 💧 None 💨 5 mph H 40%29.91 inHg

4:00 PM

Sunny

98° 💧 None 💨 6 mph H 32%29.88 inHg

7:00 PM

Sunny

89° 💧 None 💨 3 mph H 47%29.88 inHg

10:00 PM

Mostly clear night

85° 💧 None 💨 1 mph H 55%29.94 inHg

Tomorrow

1:00 AM

Clear night

78° 💧 None 💨 3 mph H 68%29.94 inHg

4:00 AM

Clear night

77° 💧 None 💨 3 mph H 70%29.91 inHg

7:00 AM

Sunny

75° 💧 None 💨 3 mph H 75%29.94 inHg

10:00 AM

Sunny

86° 💧 None 💨 4 mph H 52%29.91 inHg

1:00 PM

Sunny

92° 💧 None 💨 6 mph H 42%29.88 inHg

4:00 PM

Sunny

91° 💧 None 💨 6 mph H 40%29.83 inHg

7:00 PM

Sunny

81° 💧 None 💨 3 mph H 58%29.83 inHg

10:00 PM

Clear night

77° 💧 None 💨 4 mph H 72%29.88 inHg

Friday

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 70%29.85 inHg

4:00 AM

Clear night

74° 💧 None 💨 3 mph H 68%29.83 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 66%29.85 inHg

10:00 AM

Sunny

85° 💧 None 💨 5 mph H 46%29.85 inHg

Today

1:00 PM

Sunny

98° 💧 None 💨 5 mph H 40%29.91 inHg

2:00 PM

Sunny

99° 💧 None 💨 5 mph H 36%29.91 inHg

3:00 PM

Sunny

99° 💧 None 💨 6 mph H 33%29.88 inHg

4:00 PM

Sunny

98° 💧 None 💨 6 mph H 32%29.88 inHg

5:00 PM

Sunny

96° 💧 None 💨 5 mph H 33%29.88 inHg

6:00 PM

Sunny

93° 💧 None 💨 4 mph H 39%29.88 inHg

7:00 PM

Sunny

89° 💧 None 💨 3 mph H 47%29.88 inHg

8:00 PM

Mostly clear night

88° 💧 None 💨 2 mph H 51%29.91 inHg

9:00 PM

Mostly clear night

87° 💧 None 💨 1 mph H 52%29.91 inHg

10:00 PM

Mostly clear night

85° 💧 None 💨 1 mph H 55%29.94 inHg

11:00 PM

Clear night

84° 💧 None 💨 0 mph H 55%29.94 inHg

Tomorrow

12:00 AM

Clear night

80° 💧 None 💨 4 mph H 62%29.94 inHg

1:00 AM

Clear night

78° 💧 None 💨 3 mph H 68%29.94 inHg

2:00 AM

Clear night

77° 💧 None 💨 3 mph H 71%29.94 inHg

3:00 AM

Clear night

76° 💧 None 💨 3 mph H 73%29.91 inHg

4:00 AM

Clear night

77° 💧 None 💨 3 mph H 70%29.91 inHg

5:00 AM

Clear night

76° 💧 None 💨 3 mph H 72%29.91 inHg

6:00 AM

Clear night

75° 💧 None 💨 3 mph H 75%29.91 inHg

7:00 AM

Sunny

75° 💧 None 💨 3 mph H 75%29.94 inHg

8:00 AM

Sunny

79° 💧 None 💨 3 mph H 65%29.94 inHg

9:00 AM

Sunny

83° 💧 None 💨 3 mph H 58%29.94 inHg

10:00 AM

Sunny

86° 💧 None 💨 4 mph H 52%29.91 inHg

11:00 AM

Sunny

89° 💧 None 💨 5 mph H 49%29.91 inHg

12:00 PM

Sunny

90° 💧 None 💨 6 mph H 46%29.91 inHg

1:00 PM

Sunny

92° 💧 None 💨 6 mph H 42%29.88 inHg

2:00 PM

Sunny

93° 💧 None 💨 6 mph H 40%29.85 inHg

3:00 PM

Sunny

93° 💧 None 💨 6 mph H 39%29.83 inHg

4:00 PM

Sunny

91° 💧 None 💨 6 mph H 40%29.83 inHg

5:00 PM

Sunny

88° 💧 None 💨 5 mph H 44%29.83 inHg

6:00 PM

Sunny

85° 💧 None 💨 4 mph H 50%29.83 inHg

7:00 PM

Sunny

81° 💧 None 💨 3 mph H 58%29.83 inHg

8:00 PM

Clear night

79° 💧 None 💨 3 mph H 65%29.83 inHg

9:00 PM

Clear night

78° 💧 None 💨 4 mph H 69%29.85 inHg

10:00 PM

Clear night

77° 💧 None 💨 4 mph H 72%29.88 inHg

11:00 PM

Clear night

76° 💧 None 💨 5 mph H 72%29.88 inHg

Friday

12:00 AM

Clear night

75° 💧 None 💨 5 mph H 71%29.85 inHg

1:00 AM

Clear night

75° 💧 None 💨 5 mph H 70%29.85 inHg

2:00 AM

Clear night

75° 💧 None 💨 5 mph H 69%29.85 inHg

3:00 AM

Clear night

75° 💧 None 💨 5 mph H 67%29.83 inHg

4:00 AM

Clear night

74° 💧 None 💨 3 mph H 68%29.83 inHg

5:00 AM

Clear night

73° 💧 None 💨 3 mph H 69%29.83 inHg

6:00 AM

Clear night

73° 💧 None 💨 3 mph H 68%29.83 inHg

7:00 AM

Sunny

74° 💧 None 💨 4 mph H 66%29.85 inHg

8:00 AM

Sunny

78° 💧 None 💨 4 mph H 57%29.85 inHg

9:00 AM

Sunny

82° 💧 None 💨 5 mph H 51%29.85 inHg

10:00 AM

Sunny

85° 💧 None 💨 5 mph H 46%29.85 inHg

11:00 AM

Sunny

87° 💧 None 💨 7 mph H 46%29.85 inHg

12:00 PM

Sunny

87° 💧 None 💨 8 mph H 48%29.85 inHg

1:00 PM

Sunny

88° 💧 None 💨 8 mph H 46%29.83 inHg

2:00 PM

Sunny

88° 💧 None 💨 7 mph H 44%29.80 inHg

3:00 PM

Sunny

88° 💧 None 💨 7 mph H 44%29.80 inHg

4:00 PM

Sunny

86° 💧 None 💨 6 mph H 48%29.77 inHg

5:00 PM

Sunny

83° 💧 None 💨 6 mph H 55%29.77 inHg

6:00 PM

Sunny

80° 💧 None 💨 4 mph H 61%29.77 inHg

7:00 PM

Sunny

77° 💧 None 💨 3 mph H 68%29.80 inHg

8:00 PM

Clear night

76° 💧 None 💨 4 mph H 72%29.80 inHg

9:00 PM

Clear night

74° 💧 None 💨 4 mph H 77%29.83 inHg

10:00 PM

Clear night

73° 💧 None 💨 3 mph H 83%29.85 inHg

11:00 PM

Clear night

72° 💧 None 💨 3 mph H 88%29.85 inHg

Saturday

12:00 AM

Clear night

71° 💧 None 💨 4 mph H 89%29.83 inHg

1:00 AM

Clear night

71° 💧 None 💨 5 mph H 86%29.85 inHg

2:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 84%29.85 inHg

3:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 83%29.83 inHg

4:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 84%29.83 inHg

5:00 AM

Mostly clear night

71° 💧 0.000 in 💨 5 mph H 86%29.85 inHg

8:00 AM

Mostly cloudy

73° 💧 None 💨 8 mph H 83%29.91 inHg

11:00 AM

Mostly cloudy

77° 💧 None 💨 8 mph H 73%29.91 inHg

2:00 PM

Sunny

77° 💧 None 💨 8 mph H 67%29.85 inHg

5:00 PM

Sunny

76° 💧 None 💨 6 mph H 69%29.83 inHg

8:00 PM

Partly cloudy night

73° 💧 None 💨 4 mph H 80%29.85 inHg

11:00 PM

Mostly cloudy night

71° 💧 None 💨 4 mph H 86%29.88 inHg

Sunday

2:00 AM

Clear night

68° 💧 None 💨 2 mph H 88%29.88 inHg

5:00 AM

Overcast night

67° 💧 None 💨 0 mph H 88%29.85 inHg

8:00 AM

Light rain

70° 💧 None 💨 6 mph H 80%29.88 inHg

11:00 AM

Partly cloudy

74° 💧 None 💨 5 mph H 65%29.88 inHg

2:00 PM

Sunny

75° 💧 None 💨 8 mph H 63%29.83 inHg

5:00 PM

Sunny

74° 💧 None 💨 6 mph H 63%29.77 inHg

8:00 PM

Clear night

71° 💧 None 💨 2 mph H 74%29.77 inHg

11:00 PM

Clear night

67° 💧 None 💨 3 mph H 81%29.80 inHg

Monday

2:00 AM

Clear night

66° 💧 None 💨 4 mph H 87%29.80 inHg

5:00 AM

Clear night

66° 💧 None 💨 6 mph H 88%29.80 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 7 mph H 80%29.83 inHg

11:00 AM

Sunny

75° 💧 None 💨 9 mph H 63%29.83 inHg

2:00 PM

Sunny

75° 💧 None 💨 9 mph H 65%29.80 inHg

5:00 PM

Sunny

73° 💧 None 💨 7 mph H 66%29.80 inHg

8:00 PM

Clear night

69° 💧 None 💨 5 mph H 78%29.83 inHg

11:00 PM

Mostly clear night

68° 💧 None 💨 6 mph H 83%29.85 inHg

Tuesday

5:00 AM

Clear night

68° 💧 None 💨 5 mph H 80%29.88 inHg

11:00 AM

Sunny

65° 💧 None 💨 4 mph H 88%29.91 inHg

5:00 PM

Sunny

74° 💧 None 💨 7 mph H 64%29.97 inHg

11:00 PM

Clear night

74° 💧 None 💨 7 mph H 59%29.88 inHg

Wednesday

5:00 AM

Clear night

68° 💧 None 💨 4 mph H 81%29.97 inHg

11:00 AM

Sunny

64° 💧 None 💨 2 mph H 87%29.97 inHg

5:00 PM

Partly cloudy

75° 💧 None 💨 5 mph H 65%30.03 inHg

11:00 PM

Mostly clear night

74° 💧 None 💨 7 mph H 60%29.94 inHg

Thursday

5:00 AM

Overcast night

70° 💧 None 💨 1 mph H 78%30.00 inHg

11:00 AM

Mostly sunny

67° 💧 None 💨 1 mph H 87%29.97 inHg

5:00 PM

Overcast

75° 💧 None 💨 5 mph H 64%30.00 inHg

11:00 PM

Overcast night

74° 💧 None 💨 7 mph H 65%29.94 inHg

Friday

5:00 AM

Mostly clear night

70° 💧 None 💨 3 mph H 83%30.00 inHg

11:00 AM

Sunny

67° 💧 None 💨 1 mph H 91%29.97 inHg

5:00 PM

Mostly sunny

76° 💧 None 💨 6 mph H 63%30.00 inHg

11:00 PM

Clear night

76° 💧 None 💨 8 mph H 69%29.91 inHg

Saturday

5:00 AM

Clear night

70° 💧 None 💨 2 mph H 83%29.97 inHg

11:00 AM

Sunny

67° 💧 None 💨 3 mph H 90%29.91 inHg

5:00 PM

Mostly sunny

75° 💧 None 💨 6 mph H 68%29.94 inHg

11:00 PM

Clear night

75° 💧 None 💨 7 mph H 66%29.85 inHg

Sunday

5:00 AM

Mostly cloudy night

69° 💧 None 💨 2 mph H 85%29.88 inHg

11:00 AM

Mostly sunny

65° 💧 None 💨 3 mph H 88%29.88 inHg

5:00 PM

Mostly cloudy

74° 💧 None 💨 6 mph H 65%29.94 inHg

11:00 PM

Clear night

73° 💧 None 💨 6 mph H 59%29.85 inHg

Monday

5:00 AM

Clear night

67° 💧 None 💨 2 mph H 76%29.91 inHg

11:00 AM

Mostly sunny

63° 💧 None 💨 5 mph H 74%29.91 inHg

5:00 PM

Sunny

74° 💧 None 💨 4 mph H 60%29.97 inHg

11:00 PM

Clear night

74° 💧 None 💨 8 mph H 62%29.88 inHg

Tuesday

5:00 AM

Clear night

67° 💧 None 💨 1 mph H 83%29.91 inHg

11:00 AM

Sunny

65° 💧 None 💨 4 mph H 88%29.88 inHg

5:00 PM

Sunny

75° 💧 None 💨 4 mph H 61%29.88 inHg

11:00 PM

Clear night

75° 💧 None 💨 5 mph H 65%29.80 inHg

Wednesday

5:00 AM

Clear night

68° 💧 None 💨 3 mph H 90%29.85 inHg

11:00 AM

Mostly sunny

61° 💧 None 💨 2 mph H 97%29.83 inHg

5:00 PM

Mostly sunny

74° 💧 None 💨 5 mph H 72%29.88 inHg

11:00 PM

Clear night

78° 💧 None 💨 5 mph H 64%29.80 inHg

In Mission Viejo and, more broadly, across the state of California: The rest of the day will feature a mix of sun and clouds, with temperatures remaining very hot, ranging from 81 to 95 degrees Fahrenheit. Expect the breezes to be mostly moderate, coming from the northwest at around 10 mph, with occasional gusts reaching up to 17 mph. No precipitation is anticipated, so outdoor activities can generally be enjoyed without concern for rain. The weather conditions suggest it will stay warm and partly cloudy through the afternoon, with comfortable wind speeds helping to keep the air feeling a bit more refreshed. It's advisable to stay hydrated and protect yourself from the sun if spending time outside during these hot conditions.

15-Day Weather Outlook for Mission Viejo

TomorrowTomorrow

Mostly sunny 96°/75° 💧 None 💨 6 mph

Friday, Sep 11Fri Sep 11

Sunny 88°/73° 💧 None 💨 8 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 83°/71° 💧 0.005 in 💨 8 mph

Sunday, Sep 13Sun Sep 13

Light rain 76°/67° 💧 0.007 in 💨 8 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 75°/66° 💧 None 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 73°/65° 💧 0.001 in 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Sunny 74°/64° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 75°/67° 💧 0.001 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Overcast 75°/67° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 76°/67° 💧 None 💨 8 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 75°/65° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly cloudy 74°/63° 💧 0.014 in 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Sunny 74°/65° 💧 None 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 75°/61° 💧 None 💨 5 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 78°/74° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mission Viejo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mission Viejo

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 9,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 18,0µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 99,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,0µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Mission Viejo

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 9,1Very high 🙂Fair

Tomorrow UV 9,3Very high 😷Poor

Friday UV 9,0Very high 😐Moderate

Saturday UV 9,1Very high 😐Moderate

Sunday UV 6,0High 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

1:00 PMUV 9,1 2:00 PMUV 8,2 3:00 PMUV 6,1 4:00 PMUV 3,6 5:00 PMUV 1,6 6:00 PMUV 0,4 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

High heat

Stay hydrated and avoid intense exercise during the hottest part of the day.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Mission Viejo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MISSION VIEJO, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:30 PM–5:06 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 68° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min79%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Mission Viejo were last refreshed today at 12:38 PM. The current forecast period extends through 11/09/2026 at 10:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.